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DNSViz: A DNS visualization tool

www.dnssec-validator.cz

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DNSSEC options (hide)
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Notices
DNSSEC Authentication Chain

RRset statusRRset status

Insecure (1)
  • www.dnssec-validator.cz/CNAME
Secure (3)
  • cz/SOA
  • frontend.labs.nic.cz/A
  • frontend.labs.nic.cz/AAAA

DNSKEY/DS/NSEC statusDNSKEY/DS/NSEC status

Insecure (2)
  • dnssec-validator.cz/DNSKEY (alg 13, id 42530)
  • dnssec-validator.cz/DNSKEY (alg 13, id 54959)
Secure (12)
  • ./DNSKEY (alg 8, id 20326)
  • ./DNSKEY (alg 8, id 33853)
  • NSEC3 proving non-existence of dnssec-validator.cz/DS
  • cz/DNSKEY (alg 13, id 16513)
  • cz/DNSKEY (alg 13, id 20237)
  • cz/DS (alg 13, id 20237)
  • labs.nic.cz/DNSKEY (alg 13, id 13482)
  • labs.nic.cz/DNSKEY (alg 13, id 23431)
  • labs.nic.cz/DS (alg 13, id 13482)
  • nic.cz/DNSKEY (alg 13, id 61281)
  • nic.cz/DNSKEY (alg 13, id 64795)
  • nic.cz/DS (alg 13, id 61281)

Delegation statusDelegation status

Incomplete (1)
  • cz to dnssec-validator.cz
Secure (3)
  • . to cz
  • cz to nic.cz
  • nic.cz to labs.nic.cz

NoticesNotices

Errors (1)
  • cz to dnssec-validator.cz: No delegation NS records were detected in the parent zone (cz). This results in an NXDOMAIN response to a DS query (for DNSSEC), even if the parent servers are authoritative for the child. (193.29.206.1, 194.0.12.1, 194.0.13.1, 194.0.14.1, 2001:678:1::1, 2001:678:f::1, 2001:678:10::1, 2001:678:11::1, UDP_-_EDNS0_4096_D_K)

DNSKEY legend

Full legend
SEP bit setSEP bit set
Revoke bit setRevoke bit set
Trust anchorTrust anchor
Download: png | svg
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DNSSEC authentication graph